都說托福閱讀部分文章有難度，其實這種難度很多時候來自于文章中的長難句。這些句子結構復雜內容繁多，考生如果無法快速正確地看懂它們必然會影響對文章的理解和解題效率。所以下面小編就為大家帶來托福閱讀100個長難句的精選匯總和深度解析，為大家提供學習指點和啟發。

托福閱讀100個長難句實例分析

原句案例：

Dinosaurs rapidly became extinct about 65 million years ago as part of a mass extinction known as the K-T event, because it is associated with a geological signature known as the K-T boundary, usually a thin band of sedimentation found in various parts of the world. (K is the traditional abbreviation for the Cretaceous, derived from the German name Kreideieit).

詞匯講解：

abbreviation /?'briv?'e??n/ n. 簡略，縮短

derive /d?'ra?v/ v. 獲得，得到;源自，源于

結構劃分：

Dinosaurs rapidly became extinct about 65 million years ago (as part of a mass extinction) (known as the K-T event),(because it is associated with a geological signature) (known as the K-T boundary), (usually a thin band of sedimentation found in various parts of the world). (K is the traditional abbreviation for the Cretaceous, (derived from the German nameKreideieit)).

深度分析：

這個句子的主干就是：

Dinosaurs rapidly became extinct about 65 million years ago

修飾一：(as part of a mass extinction) ，介詞短語

中文：成為大滅絕事件的一部分

修飾二：(known as the K-T event) ，非謂語動詞

中文：稱之為K-T事件

修飾三：(because it is associated with a geological signature) ，從句

中文：因為它與地質學上的標簽有聯系

修飾四：(known as the K-T boundary) ，非謂語動詞

中文：稱為之K-T邊緣

修飾五：(usually a thin band of sedimentation found in various parts of the world) ，同位語

中文：K-T邊界通常是一塊在世界各地都能找到的薄薄的沉積帶

修飾六：(derived from the German name Kreideieit)，非謂語動詞

中文：源自德國名字kreidezeit

參考翻譯：

大約在6500萬年前，恐龍迅速地滅絕，成為K-T大規模滅絕事件的一部分，被稱作K-T是因為它與地質學上的標簽K-T邊界有關，K-T邊界通常是一塊在世界各地都能找到的薄薄的沉積帶。(K在慣例上是白堊紀Cretaceous的縮寫，源自德國名字kreidezeit)

托福閱讀中的長難句雖然會對考生造成一定的干擾，但只要考生具備了快速看懂理解它們的能力，其實長難句也并非難以應對，希望本文內容能夠幫助大家提升閱讀實力拿到高分好成績。